Device for lifting weights



p 1944- M. H. L. JACOBSEN DEVICE FOR LIFTINQWEiGI-ITS Filed Aug. 20,1943 INVENTOR L. Ja'cobsen/ R 4 O as.

ATTORNEY Patented Sept. 19, 1944 Morris: H.- L-. J acobsen, .Guilfori:Gonn... assignor:

America-n Telephone and Telegraph ,(loml 1 .pany, a corporation ofNewXork I m 7 Application August20, 1943, Serial No. 3.0laims; (o1.254.--139 I Thisinventionrelates to aninstrument for lifting orsupporting weights; or, in other words, the type of instrument oftenreferred' to as a. gin.

Theinstrument of this invention is particularly adapted for usei'n'lioisti'ng or supporting aerial conductors, such as 'cablesusu'allysupported by telephone poles. One'otthefeatures of the' instrumentof theinvention is that it is particular- 1yadapted for hoisting or supportingconductors, suchas cables, on different kin ds of. poles, such as astraight-line pole or a pole located at a cor} ner of a line. A furtherfeature of theinstrument or tool of, the ihventionfresidesin the factthat jit may be'used at va rious. positions on the ploleas', forexample, at the top of thepoleor at a point below'thegtopof the pole..'A further feature of the instrument of the 'inventi-orifis that it mayadvantageously be used on joint-use poles,

namely, poles supporting power lines" as well' as communicationrlines.Otherfeatures andobjects of'the invention will appear more fully fromthe detailed description thereof hereinafter i -q .j R

' Thefinvention may; be more fully;understood from thefollowingdescription-together:with the accompanying drawing-in theFigures '1 -to--'6 of which theinventionis'illust'rated." In Fig; 1 isshown the gin of this invention. is illustrated with hoisting me'chanism-f'for'use in lifting a cable on a straightline polefi In Figs. L

3 and 4 the gin is illustrated with hoisting mechanism for use inlifting cables on different types of corner-poles. In Fig. 5 is shown indetail a standard cable shifting tool which could be used with the ginunder conditions illustrated in Figs. 3 and 4. Fig. 6 is a sectionalview looking down on a portion of the top of the gin shown in Fig. 1.Similar reference characters have been utilized to denote like parts inall of the figures.

In Fig. 1 is shown the gin device of the invention. It consists of anoblong member I which may be fixed in a vertical position on asupporting member, such as a telephone pole, by means of bolts insertedin the bolt holes 2 and 3. If the supporting member has a roundedsurface, such as a telephone pole, the oblong member might well be madefrom a channel bar. Affixed to the oblong member in a horizontalposition with respect thereto and near the top thereof would be thecross-bar 4. The extremities of the cross- Iri Fig. 2 the gin bar 4would be bent to form an angle with respect the sheaves 5 and 6. This ismore clearly shown in Fig. 6 which is a sectional'fview looking down ona portion of the top'of the' ginshown in Fig. 1; Bracingmemb'ers" l and8 would be aflixed to the sidesfof the oblong member'and'connectedto theextremities of'thecross-barby means'of the-pins 9 and IUfA device-l3,such as an" eye bolt', would be afiixed to the; oblong member below thecross-bar and sheave sff Guard members I1 and I2 wouldibe pivotally"attached to the top of the" cross-bar and'arrangmnts provided toattachthem to-the bracing 'members land 8.

In Fig Zfthe ginfisshOwn c0operating wi'th' a chain hoist, to lift orsup mechanism; suchas w I port a cable mena straight-line telephone poleI8. The chain hoist---n'i echanismcomprises a chain M with a hook" l5atrone end thereof." The hook l5 would beaffi'xed tothe'suspension'strand of the cable l9? The ichain l4" would be passedover the sheave-frand would pass through ratchet mechanism operated by alever 16. This ratchet -mechani'sm* would be attached by th'e'hook" If!to the eye bolt 'l 3 affixed to the oblong: member I. Obviouslyothertypes ofhoisting' mechanism,

such as ajrope; operated'device, could be used-in place-{of the e a n'hoistg i ri gz thejginf'is shown as placed atthe top; of theipole I8. tIn Fig. '3 the; gin is shown co'operating w'ith mechanism tol-ift orsupport a -'cable 19 on "a corner telephonepole with'respect to whichthe pull of the cablewouldbe towards the pole. On

this type ofpole ibis advisable to use'the standardcable shifting toolshown-i Fi'g'5fin cooperation with thehoisting'mechanism-i -'Thestandard cable shifting tool comprises a hooked member 20. The hook [fthe hoisting mechanism would I shown, and as the roller mechanism 2|would bear against the pole, the cable shifting tool would assume theposition shown in Fig. 3. Accordingly, when the hoisting mechanismoperates in cooperation with the cable shifting tool, it will serve toexert a pull away from the pole. In Fig. 3 the gin is shown on apolewhich may be jointly used not only for supporting a cable but also forsupporting power lines by means of the mechanism 25. In this case thegin is placed at a safe distance below the power line mechanism 25, asshown. a

In Fig. 4 the gin is shown cooperating with utilized. The members 22would be insertedthrough the eye holes 24 and 24of the bar 23, The cableshifting tool would then be attached to the bar 23. In this case, due tothe curvature of the cable shifting tool and the roller mechanism,

2|, the pull in hoisting the cable would be away from the pole.

In Figs. 3 and 4 the gin is shown on poles which may be jointly used notonly for supporting a cable but also for supporting powerlines by meansof the mechanism 25. When used in this connection the gin oftheinventionhas certain advantages over the prior art. In hoistingcables in certain arrangements of the prior art a lashing rope wouldfirst be placed around the pole.

The hook l5 of the chain hoistmechanism would be attached to the lashingrope. The hook I! fixed to the ratchet mechanism wouldbe attached to themember 20 of the standard cable shifting tool. The cable could then behoisted toward the lashing rope but could. not rise above a level Islightly below the hook I! on the ratchet mechanism. With the gin ofthis invention the cable may be raised to a level just below thesheaves, which level is above that of the hook I! of the ratchetmechanism; For the sake of the linemans safety the apparatus must alwaysbe placed on the pole so that the ratchet mechanism (particularly thelever thereof) is at a certain distance below the power lines.Accordingly, with the gin of this invention the ratchet mechanism may bekept at a safe distance from the power lines while at the same time thecable may be hoisted closer to such power lines than heretofore.

While the invention has been disclosed as embodied in certain specificforms which are deemed desirable, it is understood that it is capable ofembodiment in many other and widely varied forms without departing fromthe spirit of the invention as defined in the appended claims.

What'is claimed is: H 1 e V a 1. A gin'for hoisting materials comprisingan oblong member, means for afiixing said oblong member in a verticalposition to an upright member, a flat surfaced cross-bar aflixed in ahorizontal position to the top portion of said oblong member so that theflat surface of the cross-bar is in the same plane as the main surfaceof said oblong member, said cross-bar having its extremities bent towardsaid upright member to form an angle with respect to the central portionof said cross-bar, sheaves aflixed to the extremities of said cross-barand adapted to cooperate with hoisting mechanism, and means on saidoblong member whereby said hoisting mechanism may be aflixed theretobelow said cross-bar.

2. A gin for hoisting aerial cable comprising an oblong member, meansfor aflixing said oblong member in a vertical position to a pole, a flatsurfaced cross-bar afiixed in a horizontal position to the top portionof said'oblong member so that the flat surface of the cross-bar is inthe same plane as the main surface of said oblong member, sheavesaflixed to the extremities of said cross-bar and adapted to cooperatewith hoisting mechanism, and means on said oblong member whereby saidhoisting mechanism may be aflixed thereto below said cross-bar, theextremities of said cross-bar being bent partially around said pole sothat the position of the sheaves on said extremities will cause saidhoisting mechanism to exert a vertical upward pull at a side of the polewith respect to the position thereon of said oblong member. V r 3. A ginforhoisting materials comprising an oblong member, meansfor affixingsaid oblong member in avertical position to an upright member, a flatsurfacedscross-bar. aifixed in a horizontal position to the top portionof said oblong member so that the flat surface of the cross-bar is inthe same plane as the main surface of said oblong member,bracing membersaiiixed to said oblong member and the extremities of said crossbar,guards afiixed to the central portion of said cross-bar and to saidbracing members said cross-bar having its extremities bent partiallyaround said upright member, sheaves affixed to the extremitiesof saidcross-bar and adapted to cooperate with hoisting mechanism, and means onsaid oblong member whereby said hoisting mechanismmay be affixed theretobelow said cross-bar.

MORRIS H. L. JACOBSEN.

